you could have 4 seperate games and each one of them starts at the same place where you go through the storyline but game no.1 will have the option of going to kanto
no 2 will take you to johto and so onthat way you could maintain the same level cap trading would still be worth it and they would make money from each of these seperate games because i imagine many people would want to visit both gen 1 and 2

When it all ends, one last game should come out. you get to play with any style animation (old or new style, 2D or 3D, etc.), go to any region, and it has all the pokemon. at the end, you should be able to battle oak.

This is the only thing I´m waiting for what Pokemon is concerned.
All Regions + All Extra-Areas (Islands from Firered/Leafgreen, the Battle Tower, Mews Island, etc),
All Extras: Weather, Day/Night, Pokemon following you, Secret Bases, Underground, etc...maybe a Snap-Option ingame? Or Pokemon Trading Card Game ingame? (That Game did kick ass, pity they didn´t make one for the newer Generations)
All Pokemon + All Legendaries Accessible, without Cheats, Events, etc
Leveling possible up to 150 or 200 (necessary, if you want to travel all regions + Gyms/Arenas)
More Story. A big and complex Story, over all the World, meeting the Main-Charas of the previous Games, + the Evildoers, Professors, etc, some of the Legendaries included in the Main-story, ending in a great Battle.
In the Aftermath, a possible fight against Red/Ash like the one on the Mount Silver, but this time only when you got full Pokedex and him telling you that you now are the Pokemaster or something.
Tons of Secrets, extra-quests for the Legendaries, new secrets, maybe a solution for the question what the Icognitos were all about?

That game. God, I would pay as much as I paid for all the Games before for that Game. And more. Sorry for the Rant.

Yes. But sadly I don´t think it would. I was honestly thinking about getting a Job in Videogames-Industry, just to try to make this happen. But sadly I´m not a Gamer at all, other than with Final Fantasy and Pokemon, so my Chances would have been Zero. Well, hope falls last, maybe someone will make this real, sometimes.D

yeah, it was a side story in between the Kanto and Johto story lines in the tv series. Ash went to the orange islands to get the "GS Ball" for Oak and ended up traveling around these group of large islands. long story short there were "Gyms" on the different islands and when he got the badges he challenged the elite 4 of the orange islands, known as the orange crew. It was a fun filler in between the 2 series and ash ended up winning the orange league cup. not to mention he caught a lapras and his charizard started listening to him.

I just think it would be cool to have that as an option in a game, to go off on a tangent like that.

I was thinking just about the same. With all the regions, every time you finish that region you battle the elite four from that region thus letting you continue on to the next region. In each region you can only catch the certain pokemon from that generation. You have face team plasma and team rocket. I would honestly pay 200 for this game. Like imagine it. All the nostalgia. All the pokemon. I don't know about anyone else but its worth it to me.

Awww man, did you talk to that Salesman too? Seemed like a nice guy, right up until I caught Magikarp in bed with my girlfriend...He must of known, that's why he was selling such an amazing Pokemon for dirt cheap!

There is a huge difference in, not only graphicwise, but also content wise.

More than 100 Pokemon are added each generation, new gameplaymechanics, new items, new attacks, new animations, new graphics, more and bigger areas, everything.

Pokemon are one of the biggest gametitles on the Gameboys and the DS already and you hardly find any game with more content than Pokemon or that you could have more time playing with.

And the new Pokemon game on the 3DS is even going to be in 3D.

Wanting all regions in one is stupid and impossible. That's like wanting a Zelda game like Skyward Sword and want to be able to visit all Zelda games areas from Zelda 1 to Twilight Princess.
And aside of that there are the other issues, the other comments already pointed out

Its a lot harder than you think to get that much data to run smoothly as a game. Its possible but it would take a lot of effort and file conversion and most of all, optimization.

Especially if the game world is to be that large, the amount of memory needed and optimization required would grow exponentially. You would need an incredible algorithm to handle it. One that would be able to both sort quickly and sort massively. As of right now, that doesn't exist. We only have algorithms to allow for one or the other.

Theoretically it may be possible to create an algorithim to feature all the regions, but it would likely only be feasible by reducing the graphic quality and focus more energy towards the algorithim processing.

LIke for instance say using the graphical levels of the 2nd or 3rd Generation games, and then allowing enough data processing leftover to work with the theoretical algorithim that would grant the ability to travel between all these regions.

No, because pokemon came out when we were the intended audience age.
It's not like when he hit 18 we were suddenly like, "Oh **** , this game series that I have love my whole life is suddenly intended for people younger than me. Better abandon it."
We adopted it as children and held onto it throughout our lives.
Pic related.

Pokemon doesn't really have an intended audience. It's entertainment. Same thing with video games. Only kids play video games right? WRONG. Over half of gamers are over 30. Boom. Knowledge. Try it sometime, you nit.

Too old? Nonsense.
People have the right to do whatever makes them happy (legal limits of course) and no one can tell them differently. Anyone, like you for example, who criticizes people for doing what they love are assholes.

Just because it can do it doesn't mean it should. Think how ******* awful the level progression would be with multiple regions. It's already pretty messed up in Gold and Silver and thats only two regions